DK Eyewitness Books, Crystal & Gem by R.R. Harding
Includes index
What is a crystal? -- World of crystals -- Natural beauty -- Crystals--outside ... -- ... and inside -- Color of crystals -- Identification -- Natural growth -- Good habits -- Discovery--recovery -- Growing from seed -- Crystals at work -- Good vibrations -- Quartz -- Diamond -- Corundum -- Beryl -- Opal -- Other gemstones -- Collectors' items -- Stones for carving -- Precious metals -- Animal and vegetable -- What is it worth? -- Making them sparkle -- Lore and legends -- Crystals at home -- Did you know? -- Identifying gemstones -- Find out more -- Glossary -- Index
Describes the seven basic shapes of crystals and other aspects of crystallography, including how they form in nature and how crystals are studied and identified